Mount Lavinia-Dehiwala weather in May 2025

Expect 31°C daytime maximum temperatures in the shade with on average 6 hours of sunshine per day in Mount Lavinia-Dehiwala in May. Check more long-term weather averages for Mount Lavinia-Dehiwala in May before you book your next holiday to Sri Lanka in 2025/2026.

  • 31°C maximum daytime temperature in May in Mount Lavinia-Dehiwala31
    31°C max day temperature
  • 6 hours of sunshine per day
  • 14 days with some rainfall in May in Mount Lavinia-Dehiwala14
    14 days with some rainfall
  • 25°C minimum night-time temperature in May in Mount Lavinia-Dehiwala25
    25°C min night temperature
  • 12 hours of daylight per day in May in Mount Lavinia-Dehiwala12
    12 hours of daylight per day
  • Very high heat & humidity in May in Mount Lavinia-DehiwalaVH
    Very High heat & humidity
  • 382 mm monthly rainfall in May in Mount Lavinia-Dehiwala382
    382 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in May in Mount Lavinia-Dehiwala11
    11+ (Extreme) UV index
  • 29°C sea temperature in May in Mount Lavinia-Dehiwala29
    29°C sea temperature

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Mount Lavinia-Dehiwala by month

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The May weather guide for Sri Lanka (Mount Lavinia-Dehiwala) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

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More about Sri Lanka

How hot is it in Mount Lavinia-Dehiwala in May?

Daytime temperatures usually reach 31°C in Mount Lavinia-Dehiwala in May with very high heat and humidity, falling to 25°C at night.

How sunny is it in Mount Lavinia-Dehiwala in May?

There are normally 6 hours of bright sunshine each day in Mount Lavinia-Dehiwala in May - that's 51% of daylight hours.

How warm is the sea around Mount Lavinia-Dehiwala in May?

The average sea temperature around Mount Lavinia-Dehiwala in May is 29°C.

Does it rain in Mount Lavinia-Dehiwala in May?

There are usually 14 days with some rain in Mount Lavinia-Dehiwala in May and the average monthly rainfall is 382mm.

Mount Lavinia-Dehiwala May sunrise & sunset times

Browse the sunrise and sunset times for Mount Lavinia-Dehiwala in May 2025. Select a month to view Mount Lavinia-Dehiwala sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st May 2025 05:57 18:19
Friday, 16th May 2025 05:54 18:20
Saturday, 31st May 2025 05:54 18:23

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